/* ===== Design tokens (Bluish-Green Theme) ===== */
/* ===== Design tokens (Blue‑Cyan leaning) ===== */
:root{
  /* Blue slate foundation */
  --bg: #0a1624;          /* darker, slightly blue */
  --surface: #0e2130;     /* menus/panels */
  --card: #11283a;        /* cards/sections */
  --border: #1c3d55;      /* cool blue border */

  /* Text */
  --text: #e9f3fb;
  --muted-foreground:#b7cfe6;

  /* Accents (more blue than green) */
  --accent: #2aa7ff;      /* primary azure */
  --accent-2:#22d3ee;     /* cyan */
  --accent-3:#7cd3ff;     /* lighter sky blue */

  /* Feedback */
  --danger:#ef4444;

  --radius: 16px;
  --shadow: 0 12px 28px rgba(0,0,0,0.35);
}

/* ===== Layout ===== */
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto;
  color: var(--text);
  background:
    radial-gradient(1100px 650px at 0% 0%, #0d2d31 0%, #071a1c 60%),
    radial-gradient(900px 680px at 120% 0%, #0b2730 0%, #071a1c 62%),
    linear-gradient(180deg, rgba(34,211,238,0.05), rgba(16,179,163,0.05));
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

.container{ width: min(1200px, 92%); margin: 0 auto; }
.section{ padding: 72px 0; }
.section.alt{ background: rgba(34,211,238,0.03); }
.section-title{ font-size: clamp(1.6rem, 2.4vw, 2.2rem); margin: 0 0 8px; }
.section-subtitle{ color: var(--muted-foreground); margin-top: 0; }

/* ===== Header / Branding ===== */
.site-header{
  position: sticky; top:0; z-index:100;
  background: rgba(7, 26, 28, 0.65);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(56,189,248,0.18);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; padding:14px 0; }
.brand{ display:flex; align-items:center; gap:10px; color: var(--text); font-weight:600; }
.brand img{ height:32px; width:auto; filter: drop-shadow(0 2px 10px rgba(34,211,238,.35)); }

/* ===== Nav ===== */
.nav-toggle{
  background: transparent; color: var(--text);
  border:1px solid var(--border);
  padding: 8px 10px; border-radius: 10px; display:none;
}
.nav-menu{
  display:flex; align-items:center; gap: 18px;
  list-style:none; margin:0; padding:0;
}
.nav-menu a{
  color: var(--text); opacity:.92; text-decoration:none;
}
.nav-menu a:hover{
  opacity:1; 
  text-decoration: underline;
  text-underline-offset: 3px;
}
.nav-menu .btn-sm{ padding: 8px 14px; border-radius: 12px; }

/* ===== Hero ===== */
.hero{ padding: 64px 0 40px; }
.hero-inner{ display:grid; grid-template-columns: 1.2fr 1fr; gap: 36px; align-items:center; }
.hero-copy h1{ font-size: clamp(2rem, 3.5vw, 3rem); line-height:1.2; margin:0 0 12px; }
.accent{ color: var(--accent); }
.hero-copy p{ color: var(--muted-foreground); margin: 0 0 18px; }
.hero-cta{ display:flex; gap:12px; flex-wrap:wrap; margin-bottom:12px; }
.trust-list{
  list-style: none; padding:0; margin: 10px 0 0;
  color: var(--muted-foreground); display:grid; gap:6px;
}
.hero-art img{
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(56,189,248,.18);
}

/* ===== Grids, Cards, Portfolio ===== */
.grid{ display:grid; gap: 18px; }
.grid.two{ grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.cards{ grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card{
  background: linear-gradient(180deg, rgba(34,211,238,0.08), rgba(16,179,163,0.03)), var(--card);
  border:1px solid rgba(56,189,248,.20);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card h3{ margin: 0 0 8px; }
.card .bullets{ margin: 10px 0 0; color: var(--muted-foreground); }

.portfolio{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
.portfolio-card{
  display:flex; flex-direction:column; overflow:hidden;
  border-radius: var(--radius);
  border: 1px solid rgba(56,189,248,.20);
  background: var(--card);
  box-shadow: var(--shadow);
}
.portfolio-card .thumb{ aspect-ratio: 16/9; background-size: cover; background-position: center; }
.portfolio-card .portfolio-body{ padding:14px; }
.tags{ display:flex; gap:8px; list-style:none; padding:0; margin: 8px 0 0; }
.tags li{
  font-size:.85rem;
  color:#e6fffd;
  background: linear-gradient(180deg, rgba(56,189,248,.22), rgba(16,179,163,.12));
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid rgba(56,189,248,.3);
}

/* ===== About ===== */
.about{ display:grid; grid-template-columns: 1.1fr .9fr; gap: 24px; }
.stats{ display:grid; gap:12px; align-content:start; }
.stat{
  background: linear-gradient(180deg, rgba(34,211,238,.12), rgba(16,179,163,.06));
  border: 1px solid rgba(56,189,248,0.25);
  padding: 14px; border-radius: 14px;
}
.stat span{ display:block; font-size: 1.6rem; color: #eafffd; }

/* ===== CTA ===== */
.cta{
  padding: 56px 0;
  background: linear-gradient(180deg, rgba(34,211,238,.08), rgba(16,179,163,.05));
  border-top: 1px solid rgba(56,189,248,0.25);
  border-bottom: 1px solid rgba(56,189,248,0.25);
}
.cta-inner{ display:flex; align-items:center; justify-content:space-between; gap: 16px; }
.cta-inner p{ margin:0; color: var(--muted-foreground); }

/* ===== Contact ===== */
.contact{ display:grid; grid-template-columns: 1.2fr .8fr; gap: 24px; }

.contact-form{
  background: linear-gradient(180deg, rgba(34,211,238,.08), rgba(16,179,163,.04)), var(--card);
  border:1px solid rgba(56,189,248,.22);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

label{ display:block; font-weight: 600; font-size:.95rem; }

input, textarea{
  width:100%; margin-top: 6px; margin-bottom: 12px; padding: 12px;
  background: var(--surface);
  color: var(--text);
  border:1px solid rgba(56,189,248,0.22);
  border-radius: 12px;
}
input:focus, textarea:focus{
  outline: 2px solid rgba(34,211,238,.45);
  border-color: #22d3ee;
  box-shadow: 0 0 0 3px rgba(34,211,238,.15);
}

.contact-aside{
  background: linear-gradient(180deg, rgba(34,211,238,.06), rgba(16,179,163,.04)), var(--card);
  border:1px solid rgba(56,189,248,.22);
  border-radius: var(--radius);
  padding: 16px;
}
.contact-list{ list-style:none; padding:0; margin:0 0 12px; color: var(--muted-foreground); }

.social a{
  color:#d8fffa;
  display:inline-flex; align-items:center; justify-content:center;
  width:38px; height:38px;
  border:1px solid rgba(56,189,248,.30);
  border-radius:12px; box-shadow: var(--shadow);
  margin-right:8px;
}
.social a:hover{ color:#fff; border-color:#22d3ee; }

/* ===== Buttons ===== */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  background: linear-gradient(180deg, #11b7a7, #0ea59d);
  color:#031c1a;
  padding: 12px 18px;
  border-radius: 14px; border:1px solid rgba(56,189,248,0.25);
  cursor:pointer; text-decoration:none;
  box-shadow: 0 10px 24px rgba(34, 211, 238, .20);
}
.btn:hover{ filter: brightness(1.05); text-decoration:none; }

.btn-outline{
  background: transparent;
  border:1px solid rgba(34,211,238,0.35);
  color: var(--text);
}

.btn-invert{
  background: linear-gradient(180deg, #e8fffc, #d9fffb);
  color:#064e49;
  box-shadow: 0 10px 24px rgba(232,255,252,.20);
}

/* ===== Footer ===== */
.site-footer{
  border-top:1px solid rgba(56,189,248,0.25);
  padding: 20px 0;
}
.footer-inner{ display:flex; align-items:center; justify-content:space-between; gap: 10px; }
.footer-nav{ display:flex; gap:12px; flex-wrap:wrap; }

/* ===== Responsive ===== */
@media (max-width: 1024px){
  .cards{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .portfolio{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-inner{ grid-template-columns: 1fr; }
}
@media (max-width: 768px){
  .about, .contact, .cta-inner{ grid-template-columns: 1fr; }
  .grid.two{ grid-template-columns: 1fr; }
  .nav-toggle{ display:block; }
  .nav-menu{
    display:none; position:absolute; right: 4%; top: 58px;
    flex-direction:column;
    background: var(--surface);
    padding:10px;
    border:1px solid rgba(56,189,248,.30);
    border-radius:12px;
  }
  .nav-menu.open{ display:flex; }
}